CN101570065A - Method for manufacturing intelligent composite-material laminates used for monitoring structural longitudinal strain - Google Patents
Method for manufacturing intelligent composite-material laminates used for monitoring structural longitudinal strain Download PDFInfo
- Publication number
- CN101570065A CN101570065A CNA2009100119344A CN200910011934A CN101570065A CN 101570065 A CN101570065 A CN 101570065A CN A2009100119344 A CNA2009100119344 A CN A2009100119344A CN 200910011934 A CN200910011934 A CN 200910011934A CN 101570065 A CN101570065 A CN 101570065A
- Authority
- CN
- China
- Prior art keywords
- composite
- fiber
- strain
- layer
- fiber grating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000000835 fiber Substances 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims description 13
- 102100040287 GTP cyclohydrolase 1 feedback regulatory protein Human genes 0.000 claims description 9
- 101710185324 GTP cyclohydrolase 1 feedback regulatory protein Proteins 0.000 claims description 9
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 3
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims description 2
- 229920003192 poly(bis maleimide) Polymers 0.000 claims description 2
- 238000000748 compression moulding Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 5
- 238000001228 spectrum Methods 0.000 abstract description 5
- 238000005538 encapsulation Methods 0.000 abstract description 3
- 239000003822 epoxy resin Substances 0.000 abstract description 3
- 229920000647 polyepoxide Polymers 0.000 abstract description 3
- 229920001721 polyimide Polymers 0.000 abstract description 3
- 239000009719 polyimide resin Substances 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 16
- 239000013307 optical fiber Substances 0.000 description 15
- 230000003287 optical effect Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000000985 reflectance spectrum Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 239000011162 core material Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides a method for manufacturing intelligent composite-material laminates used for monitoring structural longitudinal strain. In order to solve the technical problems that as fiber grating sensors are bonded to the surface of a structure through polyimide resin or epoxy resin commonly used in the prior engineering, optic fiber in service is easily destroyed; the optic fiber can get encapsulation protection but cause the concentration of surrounding stress/strain thereof if the optic fiber is directly embedded in a composite-material structure; and thermal residual stress produced in a material-curing process can cause chirp phenomena of fiber grating reflection spectrum to affect the measurement accuracy of grating strain, and the like, the invention provides the method for manufacturing intelligent composite-material laminates used for monitoring structural longitudinal strain. In the method, the fiber grating sensors are embedded in composite-material layers to replace resistance strain gauges commonly used in the field of monitoring structural health; by applying prestress to embedded fiber gratings, the influence of the curing residual stress of composite material on the fiber grating reflection spectrum is reduced so as to avoid the chirp phenomena; and the stability and repeatability of the sensors are improved. In addition, the composite material plays a good role in encapsulating and protecting bare fiber gratings, and meets engineering construction requirement on sensor sensitivity.
Description
Technical field:
The invention belongs to a kind of intelligent composite preparation method, specifically a kind of intelligent composite-material laminates preparation method that the structure longitudinal strain detects that is used for who imbeds fiber-optic grating sensor.
Background technology:
In recent years, fiber-optic grating sensor is widely used in engineering structure longitudinal strain monitoring field.Compare with the traditional resistor foil gauge; fiber grating has the wavelength-division multiplex function; using an optical fiber just can detect by the implementation structure multiple spot simultaneously; remove in addition; optical fiber is not subjected to electromagnetic interference; do not need the insulation protection with structural material, high temperature resistance, resist chemical can be used as the Perfected process of surveying hidden environment and non-contactable region territory longitudinal strain monitoring.
Usually with polyimide resin or epoxy resin fiber-optic grating sensor is bonded in body structure surface on the engineering, but optical fiber destroys especially easily in the military service process.So directly optical fiber is directly imbedded sometimes and is used for strain and temperature monitoring in the composite structure; composite also can play the good packaging protection effect of optical fiber simultaneously; but fiber grating is imbedded and can be caused concentrating of its ambient stress/strain; the hot residual stress that produces in the composite material solidification process also can cause the chirp phenomenon of fiber grating reflectance spectrum simultaneously, influences the strain measurement precision of grating.Studies show that when fiber grating is imbedded 0 degree composite interlayer, less to the influence of optical grating reflection spectrum, but can realize not necessarily that on composite Materials Design the bare fibre of imbedding composite simultaneously is very fragile, this is in the large-scale engineering construction, and technology can't guarantee.
Summary of the invention
The present invention is bonded in body structure surface for polyimide resin or epoxy resin commonly used on the engineering that solves present existence with fiber-optic grating sensor; optical fiber destroys especially easily and directly imbeds optical fiber in the composite structure in the process under arms; though obtain good packaging protection; but can cause concentrating of its ambient stress/strain; the hot residual stress that produces in the composite material solidification process also can cause the chirp phenomenon of fiber grating reflectance spectrum simultaneously, influences the strain measurement precision of grating.When fiber grating was imbedded 0 degree composite interlayer, the fiber grating certainty of measurement was higher, but this is on the composite Materials Design and in the large-scale engineering construction, and technology can't guarantee.At these technical problems, the invention provides a kind of method for manufacturing intelligent composite-material laminates that is used for structure longitudinal strain monitoring, fiber-optic grating sensor is imbedded the resistance strain gage that comes alternative structure health monitoring field commonly used in the compound material laying layer.This intelligent composite sensing layer board manufacturing method is realized as follows:
(1) select the CFRP of thick 0.2mm or the GFRP material prepreg of thick 0.15mm, CFRP is by the mass ratio shop layer of warp/broadwise 50/50; GFRP is by layer structure shop, the mass ratio shop layer of warp/broadwise 80/20;
(2) material prepreg is pressed 100mm * 20mm reduction, shop layer by hand;
(3) apply prestressing force at the two ends that will imbed fiber grating, put into composite-material laminates, port section protective quartz embedded composite material along the 100mm direction;
(4) the compound material laying layer is sealed with vacuum bag, fiber grating passes vacuum bag by the silicone rubber seal adhesive tape;
(5) composite behind the layer of shop is put into autoclave, is warmed up to 125 ℃, and internal vacuum reaches 0.085Mpa, and external pressure 0.1Mpa kept 2 hours under this condition, dropped to room temperature; Intensification and cooling rate are 1 ℃/minute;
(6) thickness of final CFRP is 0.4mm, and GFRP thickness is 0.35mm.
Characteristics of the present invention and beneficial effect: by applying prestressing force, reduced of the influence of composite material solidification residual stress, avoided the generation of chirp phenomenon, improved the stable and repeated of sensor to the fiber grating reflectance spectrum to imbedding fiber grating.Composite has also played the good packaging protection effect of bare optical fibers and bare optical gratings simultaneously, has satisfied engineering construction to the transducer sensitivity requirement.
The intelligent composite-material laminates of imbedding fiber grating is used for engineering structure longitudinal strain monitoring, the moulding process of imbedding technology and composite-material laminates by the control fiber grating, make the fiber grating reflectance spectrum keep its stable unimodal shape, improve its strain monitoring precision.By using this intelligent composite-material laminates to carry out structure longitudinal strain when monitoring, that just needn't consider fiber grating imbeds technology and encapsulation problem, satisfies fiber grating and uses in the through engineering approaches of structure longitudinal strain monitoring.
Description of drawings
Fig. 1 is an operation principle sketch of the present invention.
The sign flag explanation that in Fig. 1, occurs:
1 represents fiber-optic grating sensor; Symbol 2 is represented optical fiber; Symbol 3 is represented the compound material laying layer; Symbol 4 is represented vacuum bag; Meet 5 and represent quartz sheath; Symbol 6 is represented predispersed fiber stress bringing device.
The specific embodiment
Referring to Fig. 1, a kind of method for manufacturing intelligent composite-material laminates that is used for structure longitudinal strain monitoring, its step is as follows:
(1) select the CFRP of thick 0.2mm or the GFRP material prepreg of thick 0.15mm, CFRP is by the shop layer of warp/broadwise 50/50 (mass ratio); GFRP is by layer structure shop, the shop layer of warp/broadwise 80/20 (mass ratio);
(2) material prepreg is pressed 100mm * 20mm reduction, shop layer by hand;
(3) apply prestressing force at the two ends that will imbed fiber grating, put into composite-material laminates, port section protective quartz embedded composite material along the 100mm direction;
(4) the compound material laying layer is sealed with vacuum bag, fiber grating passes vacuum bag by the silicone rubber seal adhesive tape;
(5) compound material laying layer structure put into autoclave, is warmed up to 125 ℃, and internal vacuum reaches 0.085Mpa, and external pressure 0.1Mpa kept 2 hours under this condition, dropped to room temperature; Intensification and cooling rate are 1 ℃/minute;
(6) thickness of final CFRP is 0.4mm, and GFRP thickness is 0.35mm.
Operation principle
When temperature, strain and other measured physical quantity around the grating change, to cause the variation of grating cycle or fiber core refractive index, thereby the centre wavelength of fiber grating is drifted about, just can obtain the situation of change of measured physical quantity by the variation that detects grating centre wavelength.When having only effects of strain, the drift of centre wavelength is mainly determined by strain.
Strain causes that the relative drift of grating bragg wavelength is
Should note in force:
1, in this invention fiber-optic grating sensor to imbed technology very important to the strain certainty of measurement, if do not apply primary stress, it is bad to cause optical fiber to combine with matrix material, can cause the warbling of optical grating reflection spectrum, produces the multimodal phenomenon.Keep the prestressing force of optical fiber in the resin curing process, can reduce the influence of horizontal hot residual stress, can reduce the influence of the little curved effect of composite warp/broadwise adjacent layer simultaneously.
2, fiber grating is prestressed applies (prestressed apply the centre wavelength that size will guarantee fiber grating drift about) uses encapsulation apparatus for exerting prestress of optical fiber grating sensor, sees patent 200810150477.2.
3, the grating length of fiber-optic grating sensor can be selected 5mm, 10mm, 15mm for use, and grating department is divided into naked optical grating construction, and the wave-length coverage of grating is 1510-1590nm.
4, during strain measurement, dynamic strain measurement can use the SI425 dynamic raster (FBG) demodulator of MOI company, and the measurement of static strain can be used SI125-500 static strain (FBG) demodulator, study the details of optical grating reflection spectrum and can use SI725 grating demodulation instrument.
5, the moulding process of composite also can adopt die press technology for forming except that adopting step (5).
6, the resin of prepreg can be selected epoxy or bismaleimide resin system for use.
Claims (3)
1, a kind of method for manufacturing intelligent composite-material laminates that is used for structure longitudinal strain monitoring, it is characterized in that: the preparation method of this laminate realizes by following step:
(1) select the CFRP of thick 0.2mm or the GFRP material prepreg of thick 0.15mm, CFRP is by the mass ratio shop layer of warp/broadwise 50/50; GFRP is by the mass ratio shop layer of warp/broadwise 80/20;
(2) material prepreg is pressed 100mm * 20mm reduction, shop layer by hand;
(3) apply prestressing force at the two ends that will imbed fiber grating, put into composite-material laminates, port section protective quartz embedded composite material along the 100mm direction;
(4) the compound material laying layer is sealed with vacuum bag, fiber grating passes vacuum bag by the silicone rubber seal adhesive tape;
(5) composite behind the layer of shop is put into autoclave, is warmed up to 125 ℃, and internal vacuum reaches 0.085Mpa, and external pressure 0.1Mpa kept 2 hours under this condition, dropped to room temperature; Intensification and cooling rate are 1 ℃/minute;
(6) thickness of final CFRP is 0.4mm, and GFRP thickness is 0.35mm.
2, method for manufacturing intelligent composite-material laminates according to claim 1 is characterized in that: described prepreg is selected epoxy or bismaleimide resin system for use.
3, method for manufacturing intelligent composite-material laminates according to claim 1 is characterized in that: compression molding is adopted in the moulding of the composite behind the layer of described step (5) shop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100119344A CN101570065B (en) | 2009-06-10 | 2009-06-10 | Method for manufacturing intelligent composite-material laminates used for monitoring structural longitudinal strain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100119344A CN101570065B (en) | 2009-06-10 | 2009-06-10 | Method for manufacturing intelligent composite-material laminates used for monitoring structural longitudinal strain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101570065A true CN101570065A (en) | 2009-11-04 |
| CN101570065B CN101570065B (en) | 2011-08-10 |
Family
ID=41229603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100119344A Expired - Fee Related CN101570065B (en) | 2009-06-10 | 2009-06-10 | Method for manufacturing intelligent composite-material laminates used for monitoring structural longitudinal strain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101570065B (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152549A (en) * | 2010-12-17 | 2011-08-17 | 长沙凯森竹木新技术有限公司 | Natural bamboo fiber optical intelligent composite material and preparation method thereof |
| CN102853856A (en) * | 2012-07-24 | 2013-01-02 | 中国电子科技集团公司第八研究所 | Method for eliminating chirping phenomenon of fiber grating sensor |
| CN103628697A (en) * | 2013-11-22 | 2014-03-12 | 广西科技大学 | Fiber grating intelligent plate made of fiber reinforced polymer in pulling extrusion and continuous forming mode and manufacturing method thereof |
| CN103673914A (en) * | 2013-12-13 | 2014-03-26 | 北京航天时代光电科技有限公司 | Optical fiber grating strain sensor and installation method thereof |
| CN104199140A (en) * | 2014-08-22 | 2014-12-10 | 中航复合材料有限责任公司 | Manufacturing method for pre-buried fiber grating composite material laminated plate |
| CN104466420A (en) * | 2013-09-18 | 2015-03-25 | 深圳光启高等理工研究院 | Artificial electromagnetic material, manufacturing method of artificial electromagnetic material, antenna housing and antenna system |
| CN104466421A (en) * | 2013-09-18 | 2015-03-25 | 深圳光启高等理工研究院 | Artificial electromagnetic material, manufacturing method of artificial electromagnetic material, antenna housing and antenna system |
| CN105371903A (en) * | 2015-12-21 | 2016-03-02 | 山东大学 | Fiber bragg grating (FBG) sensor insert for detection of plastic thick plate products and manufacturing method thereof |
| CN105651321A (en) * | 2016-01-07 | 2016-06-08 | 小牛动力（武汉）新能源技术有限公司 | Optical fiber sensing polymer composite film and application method thereof |
| CN105762401A (en) * | 2016-01-07 | 2016-07-13 | 小牛动力（武汉）新能源技术有限公司 | Lithium ion power battery and utilization method thereof |
| CN105758793A (en) * | 2016-03-07 | 2016-07-13 | 南京航空航天大学 | Curing procedure oriented method for monitoring interfacial force between composite materials and molds |
| CN106053474A (en) * | 2016-05-24 | 2016-10-26 | 中国航空工业集团公司北京长城计量测试技术研究所 | Protecting method of optical-fiber grating sensor attached to surface of composite-material structure |
| CN107503525A (en) * | 2017-08-04 | 2017-12-22 | 山东大学 | A kind of built-in intelligent composite of high-performance optical fiber and preparation method thereof |
| WO2018064949A1 (en) * | 2016-10-09 | 2018-04-12 | 山东大学 | Composite material-encapsulated fiber grating sensor and manufacturing method therefor |
| CN108061522A (en) * | 2017-12-14 | 2018-05-22 | 贵州航天计量测试技术研究所 | Distribution type fiber-optic Bragg grating MISSILE LAUNCHING case strain monitoring system |
| CN108724770A (en) * | 2017-04-24 | 2018-11-02 | 波音公司 | Device and method for the analog temperature during heat cure period |
| CN109269533A (en) * | 2018-09-05 | 2019-01-25 | 北京百世通管道科技有限公司 | A kind of Intelligent optical fiber sensor skin and its preparation and application |
| CN109278395A (en) * | 2018-09-11 | 2019-01-29 | 山东大学 | Composite material sandwich structure, the monitoring system and method for interplantation fiber grating |
| CN111761842A (en) * | 2020-06-11 | 2020-10-13 | 中国舰船研究设计中心 | Fiber grating sensor pre-embedding method based on vacuum auxiliary forming process |
| CN113702172A (en) * | 2021-07-30 | 2021-11-26 | 南京航空航天大学 | Method for testing residual strain of resin curing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353840B (en) * | 2021-12-02 | 2023-08-22 | 长飞光纤光缆股份有限公司 | Fiber bragg grating sensor for integrally formed tunnel and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101324448B (en) * | 2008-07-28 | 2010-06-02 | 西安石油大学 | Encapsulation apparatus for exerting prestress of optical fiber grating sensor |
-
2009
- 2009-06-10 CN CN2009100119344A patent/CN101570065B/en not_active Expired - Fee Related
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152549A (en) * | 2010-12-17 | 2011-08-17 | 长沙凯森竹木新技术有限公司 | Natural bamboo fiber optical intelligent composite material and preparation method thereof |
| CN102853856A (en) * | 2012-07-24 | 2013-01-02 | 中国电子科技集团公司第八研究所 | Method for eliminating chirping phenomenon of fiber grating sensor |
| CN104466420A (en) * | 2013-09-18 | 2015-03-25 | 深圳光启高等理工研究院 | Artificial electromagnetic material, manufacturing method of artificial electromagnetic material, antenna housing and antenna system |
| CN104466421A (en) * | 2013-09-18 | 2015-03-25 | 深圳光启高等理工研究院 | Artificial electromagnetic material, manufacturing method of artificial electromagnetic material, antenna housing and antenna system |
| CN103628697B (en) * | 2013-11-22 | 2016-06-29 | 广西科技大学 | The continuously shaped intelligent plate of fiber grating fibre reinforced composites pultrusion |
| CN103628697A (en) * | 2013-11-22 | 2014-03-12 | 广西科技大学 | Fiber grating intelligent plate made of fiber reinforced polymer in pulling extrusion and continuous forming mode and manufacturing method thereof |
| CN103673914A (en) * | 2013-12-13 | 2014-03-26 | 北京航天时代光电科技有限公司 | Optical fiber grating strain sensor and installation method thereof |
| CN104199140A (en) * | 2014-08-22 | 2014-12-10 | 中航复合材料有限责任公司 | Manufacturing method for pre-buried fiber grating composite material laminated plate |
| CN104199140B (en) * | 2014-08-22 | 2017-06-06 | 中航复合材料有限责任公司 | A kind of laminated board fabrication method of pre-buried optical fiber Bragg grating |
| CN105371903A (en) * | 2015-12-21 | 2016-03-02 | 山东大学 | Fiber bragg grating (FBG) sensor insert for detection of plastic thick plate products and manufacturing method thereof |
| CN105371903B (en) * | 2015-12-21 | 2017-06-06 | 山东大学 | A kind of detection of plastic slabs product fiber-optic grating sensor inserts and its manufacture method |
| CN105651321A (en) * | 2016-01-07 | 2016-06-08 | 小牛动力（武汉）新能源技术有限公司 | Optical fiber sensing polymer composite film and application method thereof |
| CN105762401B (en) * | 2016-01-07 | 2017-10-31 | 小牛动力（武汉）新能源技术有限公司 | Lithium-ion-power cell and application method |
| CN105762401A (en) * | 2016-01-07 | 2016-07-13 | 小牛动力（武汉）新能源技术有限公司 | Lithium ion power battery and utilization method thereof |
| CN105758793A (en) * | 2016-03-07 | 2016-07-13 | 南京航空航天大学 | Curing procedure oriented method for monitoring interfacial force between composite materials and molds |
| CN105758793B (en) * | 2016-03-07 | 2019-03-01 | 南京航空航天大学 | Composite material and mold interface force monitoring methods towards solidification process |
| CN106053474B (en) * | 2016-05-24 | 2018-10-02 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of Surface Mount is in the fiber-optic grating sensor guard method of composite structure |
| CN106053474A (en) * | 2016-05-24 | 2016-10-26 | 中国航空工业集团公司北京长城计量测试技术研究所 | Protecting method of optical-fiber grating sensor attached to surface of composite-material structure |
| US10399286B2 (en) | 2016-10-09 | 2019-09-03 | Shandong University | Composite material packaged fiber grating sensor and manufacturing method thereof |
| WO2018064949A1 (en) * | 2016-10-09 | 2018-04-12 | 山东大学 | Composite material-encapsulated fiber grating sensor and manufacturing method therefor |
| CN108724770A (en) * | 2017-04-24 | 2018-11-02 | 波音公司 | Device and method for the analog temperature during heat cure period |
| CN108724770B (en) * | 2017-04-24 | 2021-11-02 | 波音公司 | Apparatus and method for simulating temperature during thermal cure cycle |
| US11338480B2 (en) | 2017-04-24 | 2022-05-24 | The Boeing Company | Apparatus and method for emulating temperature during a thermal cure cycle |
| CN107503525A (en) * | 2017-08-04 | 2017-12-22 | 山东大学 | A kind of built-in intelligent composite of high-performance optical fiber and preparation method thereof |
| CN108061522A (en) * | 2017-12-14 | 2018-05-22 | 贵州航天计量测试技术研究所 | Distribution type fiber-optic Bragg grating MISSILE LAUNCHING case strain monitoring system |
| CN109269533A (en) * | 2018-09-05 | 2019-01-25 | 北京百世通管道科技有限公司 | A kind of Intelligent optical fiber sensor skin and its preparation and application |
| CN109278395A (en) * | 2018-09-11 | 2019-01-29 | 山东大学 | Composite material sandwich structure, the monitoring system and method for interplantation fiber grating |
| CN109278395B (en) * | 2018-09-11 | 2019-05-17 | 山东大学 | Composite material sandwich structure, the monitoring system and method for interplantation fiber grating |
| CN111761842A (en) * | 2020-06-11 | 2020-10-13 | 中国舰船研究设计中心 | Fiber grating sensor pre-embedding method based on vacuum auxiliary forming process |
| CN113702172A (en) * | 2021-07-30 | 2021-11-26 | 南京航空航天大学 | Method for testing residual strain of resin curing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101570065B (en) | 2011-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101570065B (en) | Method for manufacturing intelligent composite-material laminates used for monitoring structural longitudinal strain | |
| CN106404065B (en) | A kind of fiber-optic grating sensor and its manufacturing method of composite material encapsulation | |
| CN101571491A (en) | Fiber grating monitoring method for curing residual strain of composite materials | |
| Matveenko et al. | Measurement of strains by optical fiber Bragg grating sensors embedded into polymer composite material | |
| Okabe et al. | Detection of transverse cracks in CFRP composites using embedded fiber Bragg grating sensors | |
| CN201497490U (en) | Optical fiber Bragg grating strain sensor packaged by carbon fiber reinforced composite material | |
| CN105043458B (en) | A kind of fibrous composite lightning damage on-line measuring device and method | |
| Davis et al. | High-strain fiber Bragg gratings for structural fatigue testing of military aircraft | |
| Voet et al. | Multi-axial strain transfer from laminated CFRP composites to embedded Bragg sensor: II. Experimental validation | |
| Li et al. | Mechanical property and strain transferring mechanism in optical fiber sensors | |
| CN105158265A (en) | Online detecting device and method for impact damage of composites | |
| Mou et al. | Smart structure sensors based on embedded fibre Bragg grating arrays in aluminium alloy matrix by ultrasonic consolidation | |
| CN1216278C (en) | Packaging structure of fibre-optical grating | |
| KR101529610B1 (en) | Apparatus and Sensing System for Fiber Bragg Grating Probes Having Controlled Sensitivity and Method for Sensing and Manufacturing thereof | |
| CN205785609U (en) | A kind of optical fiber optical grating stress sensor based on carbon fiber encapsulation | |
| Shen et al. | Strain transferring mechanism analysis of the substrate-bonded FBG sensor | |
| Wei et al. | High pressure sensor based on fiber Bragg grating and carbon fiber laminated composite | |
| Liu et al. | Research on the methodology of development and calibration of flexible encapsulated fiber Bragg grating sensors | |
| CN202339313U (en) | Novel optical fiber grating corrosion sensor | |
| CN108007604A (en) | Array fibre surveys metal/composite material interlayer temperature and the method and device of strain | |
| Eum et al. | Process/health monitoring for wind turbine blade by using FBG sensors with multiplexing techniques | |
| Qi et al. | Response of an embedded fibre bragg grating to thermal and mechanical loading in a composite laminate | |
| Wei et al. | Strain capability of optical fibre Bragg grating sensing in composite smart structures | |
| Schubel et al. | Modelling heat transfer through an FBG optical fibre | |
| Yue | Strain transfer analysis of substrate fiber Bragg grating sensor in engineering structure health monitoring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20130610 |